Re: E vapo rust
 

On the tour Friday the weather was hot and my Model A did boil over. I cleaned up the car and refilled the cooling system with Evaporust and think I'll leave it in for at least a month.

Re: E vapo rust
 

The evaporust will eat rust but won't unclogged a radiator clogged with old grease and sedimentation. Take it off the car and fill it with a lye solution for about 20 minutes and rinse out well (backflush with air and water). Repeat a second time for 20 minutes again. Don't leave it in to long.

Re: E vapo rust
 

A week is more than enough time for Evaporust to work. As RonC stated, I fear your radiator is clogged. If flushing doesn't work, the guaranteed solution for cleaning a radiator is rodding it out.

Re: E vapo rust
 

I put 32 oz of thermocure and 2 gallons of water in the radiator of my Model T today.
I noticed that the overflow tub turned copper instead of black in a few minutes. I warmed it up a couple times and will let it sit until next weekend.

Then I will drain the Model A radiator, put the mixture in it, and top it off with more water.
I figure I will need to leave it in for about a week.

Re: E vapo rust
 

Buy some Rust911, works out to $4/gallon vs Evaporust $30/gallon. Same stuff and works the same. You buy a gallon of concentrate that makes 16 gallons for $60 shipped.

Re: E vapo rust
 

not advised...
I left it in a can and it ate through the can and soaked into my bench
put it in plastic containers if possible
tk

Re: E vapo rust
 

Where were you 24 hours ago.

I Already spent twenty bucks for Thermocure.

Re: E vapo rust
 

Not sure how good Evaporust is as an engine coolant? Works good on rust, only rust, will not attack soild metal. It turns rust to a very fine, smaller than sand

Re: E vapo rust
 

Dissolves the iron, the carbon remains and is black

Re: E vapo rust
 

Could there have been rust inside the can? The PH is somewhat neutral and shouldn't attack clean metal.

Re: E vapo rust
 

I asked Evaporust about a time limit on leaving Thermocure in my T with an aluminum water pump, old radiator and old cast iron block.

David Lewis responded and said "There is no issue with leaving Thermocure in the system for any length of time."

Re: E vapo rust
 

Someone mentioned using LYE in the radiator, but won't that eat the solder?

Re: E vapo rust
 

Back in the day when you could get your radiator hot tanked, wasn't it caustic soda they used in the tank?

Re: E vapo rust
 

On this topic, I have a red, rusty sludge in my 30's radiator which I am assuming is a combination of grease/oil and rust. Would you recommend flushing first with a dish detergent/water mixture to cut the sludge, then the EvapoRust? Any other suggestions? Thanks a million

Re: E vapo rust
 

On this topic, I have a red, rusty sludge in my 30's radiator which I am assuming is a combination of grease/oil and rust. Would you recommend flushing first with a dish detergent/water mixture to cut the sludge, then the EvapoRust? Any other suggestions? Thanks a million

I have always used Dawn dish washing liquid first to cut the oil/grease, then let it soak a day or two with straight vinegar, just be sure when you dump the vinegar out the top! I lay mine on the top of the short wall next to the driveway.

Re: E vapo rust
 

So RawHideKid, you recommend removing the radiator for the flush? If so, how to do you typically address any of the sludge that may be in the water jacket?

Re: E vapo rust